14
HYDROSTATIC TEST
When all joints are completed, perform hydrostatic test for leaks.
Hydronic systems should be tested with water (some components
are not designed to hold gas). If gas testing is necessary, pressure
must NOT exceed 80 psig. All chilled water piping and valves not
located over drain pans or drip lips must be insulated to prevent
damage from sweating. Vent all coils during final preparations.
(See Step 10, section 6 on page 18.)
Check interior unit piping for signs of leakage from shipping dam-
age or mishandling. If leaks are found, notify your local Carrier
representative before initiating any repairs.
INSULATION
Following the hydrostatic test, insulate all piping to unit to prevent
sweating.
MAXIMUM EXTERNAL STATIC PRESSURES
See Table 4 for maximum external static pressure information
when units are running at minimum airflow.
Table 5 — Unit Physical Data
LEGEND
WARNING
Never pressurize unit beyond the specified test pressure.
Always pressure test with an inert gas or fluid (nitrogen or
clear water) to avoid possible unit damage or personal injury in
the event of a leak during testing.
CAUTION
All water coils must be protected from freezing after initial
filling with water. Even if system is drained, unit coils may
still hold enough water to cause damage when exposed to
temperatures below freezing.
Table 4 — Maximum External Static Pressures at
Minimum Airflow
42BHE/BVE MINIMUM CFM
MAXIMUM ESP
(in. wg)
06 300 0.17
08 400 1.35
10 700 1.75
12 900 0.87
16 1000 1.73
20 1800 1.19
30 2200 1.36
40 3200 1.73
UNIT SIZE 42BHE, BVE 06 08 10 12 16 20 30 40
NOMINAL CFM 600 800 1000 1200 1600 2000 3000 4000
FILTERS (2-in. [50.8 mm] pleated)
Qty 11 1 1 2 2 2 2
Number...Size in. (mm) 16-1/2 x 24
(419 x 610)
16-1/2 x 24
(419 x 610)
18-1/4 x 33
(464 x 838)
18-1/4 x 33
(464 x 838)
18-1/4 x 21-1/2
(464 x 546)
20-1/2 x 22
(521 x 559)
29 x 22 (737
x 559)
29 x 29 (737
x 737)
Face Area (sq ft) 2.8 (0.26) 2.8 (0.26) 4.2 (0.39) 4.2 (0.39) 5.5 (0.51) 6.3 (0.59) 8.9 (0.83) 11.7 (1.09)
HYDRONIC COILS
Size in. (mm) 15 x 20
(381 x 508)
15 x 20
(381 x 508)
15 x 29
(381 x 736)
15 x 29
(381 x 736)
15 x 39
(381 x 991)
18 x 40
(457 x 1016)
27 x 40
(686 x 1016)
27 x 54
(686 x 1372)
Face Area sq ft (sq m) 2.1 (0.195) 2.1 (0.195) 3.0 (0.279) 3.0 (0.279) 4.1 (0.381) 4.9 (0.455) 7.7 (0.715) 10.3 (0.957)
Fins per inch 10 10 10 10 10 10 10 10
Coil Water Volume approx. gal.
per row of coil (liters)
0.240
(0.908)
0.240
(0.908)
0.324
(1.226)
0.324
(1.226
0.420
(1.590)
0.492
(1.862)
0.768
(2.907)
1.020
(3.861)
FANS
Qty...Size (in.)
1...9 x 4
(229 x 109)
1...9 x 6
(229 x 152)
1...10 x 4
(254 x 102)
1...10 x 7
(254 x 178)
1...11 x 10
(279 x 254)
1...12 x 9
(305 x 229)
1...12 x 12
(305 x 305)
1...15 x 12
(381 x 305)
DX COIL CONN. LIQUID LINE (in.) 1/4 nominal, 0.375 OD 1/2 nominal, 0.625 OD
DX COIL CONN. SUCTION LINE 3/4 in. (19.05 mm) nominal, 0.875 OD 1 nominal, 1.125 OD
1-1/2 nominal,
1.625 OD
DX— Direct Expansion
To Next Page
Loading...
